The waves were dead; the tides were in their grave,
The Moon, their Mistress, had expired before;
The winds were wither'd in the stagnant air,
And the clouds perish'd; darkness had no need
Of aid from them—she was the Universe.

Returning hate for hate multiplies hate, adding deeper darkness to a night already devoid of stars. Darkness cannot drive out darkness: only light can do that. Hate cannot drive out hate: only love can do that.

Martin Luther King, Jr., 'Where Do We Go From Here?" as published in Where Do We Go from Here : Chaos or Community? (1967), p. 62.